EP0822853B1 - Schieferschütler - Google Patents

Schieferschütler Download PDF

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Publication number
EP0822853B1
EP0822853B1 EP96915012A EP96915012A EP0822853B1 EP 0822853 B1 EP0822853 B1 EP 0822853B1 EP 96915012 A EP96915012 A EP 96915012A EP 96915012 A EP96915012 A EP 96915012A EP 0822853 B1 EP0822853 B1 EP 0822853B1
Authority
EP
European Patent Office
Prior art keywords
screen
assembly
support
lower screen
screen support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96915012A
Other languages
English (en)
French (fr)
Other versions
EP0822853A1 (de
Inventor
Kenneth W. Seyffert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Varco IP Inc
Original Assignee
Tuboscope IP Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tuboscope IP Inc filed Critical Tuboscope IP Inc
Priority to EP00204008A priority Critical patent/EP1088582B1/de
Publication of EP0822853A1 publication Critical patent/EP0822853A1/de
Application granted granted Critical
Publication of EP0822853B1 publication Critical patent/EP0822853B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
    • B01D33/03—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
    • B01D33/0346—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06—Arrangements for treating drilling fluids outside the borehole
    • E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
    • E21B21/065—Separating solids from drilling fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2230/00—Specific aspects relating to the whole B07B subclass
    • B07B2230/01—Wet separation

Definitions

  • the present invention relates to an assembly for vibrating screens.
  • drilling mud which is typically a mixture of clay, water and various additives
  • the mud picks up rock cuttings and other solids from the well and carries them to the surface in the space between the wall of the well and the drill string.
  • the solids-laden drilling mud is introduced into a shale shaker which separates the solids from the drilling mud which is reused.
  • Assemblies for vibrating screens usually known as shale shakers generally comprise a basket containing a plurality of screens arranged in a single plane. In use, the baskets are vibrated to facilitate the recovery of the drilling fluid.
  • the present invention provides an assembly for vibrating screens, the assembly comprising a base, a basket mounted on said base and movable with respect thereto, apparatus for vibrating said basket, a sump below the basket, an upper screen support and a lower screen support wherein a portion of the lower screen support underlies the upper screen support, characterised in that a flow back pan is disposed between the upper screen support and the lower screen support so that, in use, an upper screen mounted on said upper screen support discharges on to a lower screen mounted on said lower screen support whilst said flow back pan prevents material which passes through the upper screen from contacting the lower screen and directs said material into said sump.
  • a shale shaker 10 has an upper screen support 20 for supporting two upper screens 101, 102 (shown in Figures 3 to 5) and a lower screen support 30 for supporting a lower screen 103 (shown in Figures 3 to 5).
  • the upper screen support 20 and lower screen support 30 are fixed in a basket 40.
  • the basket 40 is mounted on springs 50 which are supported by a frame 60 which is mounted to a base 70.
  • a vibrating apparatus 80 for vibrating the screens 101, 102, 103 is mounted on the basket 40.
  • the lower screen support 30 comprises longitudinal cross beams 31, transverse cross beams 32 and an outer frame 33 surrounding the cross beams.
  • the lower screen support 30 is inclined upwardly towards the mouth 45 of the shale shaker 10.
  • the upper screen support comprises a first section 24 and a second section 25.
  • the first and second sections 24, 25 are each similar in construction to the lower support 30.
  • the first section 24 lies horizontally while the second section 25 is inclined upwardly towards mouth 45 of the shale shaker 10. Fifty percent of the lower screen support underlies the upper screen support.
  • the basket 40 also comprises a flow back pan 41 which is disposed between the upper screen support 20 and the lower screen support 30.
  • Another flow back pan 42 is disposed adjacent the lower screen support 30.
  • the basket 40 also comprises a feed opening 46 and a deflector plate 47.
  • An opening 43 beneath the upper and lower screen supports 20, 30 leads to a sump.
  • the vibrating apparatus 80 is of a known type which generally comprises a motor and an eccentric load.
  • the screens 101, 102, 103 in Figures 3 to 5 are shown schematically for simplicity.
  • the upper screens 101, 102 are, however, provided with course mesh while finer mesh is provided on the lower screen 103.
  • the upper and lower screens 101, 102, 103 comprise at least one three-dimensional screen having a "hill and valley" surface.
  • the "hills” may extend from one end of the screen to the other in the same general direction as the movement of solids along the top of the screen. Alternatively the "hills" may extend transverse to this direction of movement. If desired, only a portion of the three dimensional screen is undulant and the remainder is flat.
  • the basket 40 may be tilted by 5°.
  • the upper and lower screens 101, 102, 103 are fitted into the shale shaker 10.
  • the vibrating apparatus 80 is continually vibrating screens 101, 102, 103 during the below described operations.
  • the material to be separated enters the shale shaker 10 through feed opening 46.
  • the material to be separated drops on to deflector 47 and travels along upper screens 101 and 102. Liquid and small particles of the material to be separated fall through the mesh 101, 102 while the larger particles remain on the screens 101, 102.
  • the flow back pan 41 prevents the liquid and small particles which pass through the upper screen 102 falling onto the lower screen 103 and guides the material into a sump.
  • the larger particles are vibrated towards the mouth 45 end of the basket 40 where they drop onto the lower screen 103 and subsequently fall out of the mouth 45 onto a waste conveyor or into a skip. In normal operation little or no drilling mud reaches the lower screen 103.
  • the material to be separated enters the shale shaker 10 through feed opening 46.
  • substantially all the mud is separated from the solids during passage across the upper screens 101, 102 when there is a surge a significant quantity of drilling mud flows onto the lower screen 103 together with the solids and is screened thereon.
  • the flow back pan 42 guides the liquid into the sump.
  • the larger particles vibrate along the screen 103 towards the mouth 45 of the shale shaker 10 where they exit onto a waste conveyor or into a skip.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Cosmetics (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Steroid Compounds (AREA)
  • Disintegrating Or Milling (AREA)

Claims (15)

  1. Baueinheit zum Versetzen von Sieben in Schwingungen, wobei die Baueinheit eine Grundplatte (70), einen Korb (40), der an der Grundplatte (70) angebracht und in bezug darauf beweglich ist, eine Vorrichtung (80) zum Versetzen des Korbs (40) in Schwingungen, einen Sammelbehälter unter dem Korb (40), einen oberen Siebträger (20) und einen unteren Siebträger (30) umfaßt, wobei ein Abschnitt des unteren Siebträgers (30) unter dem oberen Siebträger (20) liegt, dadurch gekennzeichnet, daß zwischen dem oberen Siebträger (20) und dem unteren Siebträger (30) ein Rückflußkasten (41) so angeordnet ist, daß sich im Gebrauch ein am oberen Siebträger (20) angebrachtes oberes Sieb auf ein am unteren Siebträger angebrachtes unteres Sieb (103) entlädt, wobei der Rückflußkasten (41) verhindert, daß Material, das sich durch das obere Sieb (101, 102) bewegt, mit dem unteren Sieb (103) in Kontakt gelangt, und das Material in den Sammelbehälter lenkt.
  2. Baueinheit nach Anspruch 1, bei der wenigstens 10 % und nicht mehr als 60 % des unteren Siebträgers (30) unter dem oberen Siebträger (20) liegen.
  3. Baueinheit nach Anspruch 1, bei der ungefähr 50 % des unteren Siebträgers (30) unter dem oberen Siebträger (20) liegen.
  4. Baueinheit nach einem der Ansprüche 1, 2 oder 3, die ein oberes Sieb (101, 102) am oberen Siebträger (20) und ein unteres Sieb (103) am unteren Siebträger (30) umfaßt.
  5. Baueinheit nach Anspruch 4, bei der das obere Sieb (101, 102) und das untere Sieb (103) aus verschiedenen Werkstoffen hergestellt sind.
  6. Baueinheit nach Anspruch 4 oder 5, bei der das obere Sieb (101, 102) ein Siebungsmaterial einer ersten Maschengröße besitzt und das untere Sieb (103) ein Siebungsmaterial mit einer feineren Maschengröße als diejenige des Siebungsmaterials des oberen Siebs (101, 102) besitzt.
  7. Baueinheit nach Anspruch 4, 5 oder 6, bei der sämtliche Siebe (101, 102, 103) die gleiche Größe besitzen.
  8. Baueinheit nach einem der Ansprüche 4 bis 7, bei der wenigstens ein Sieb (101, 102, 103) ein dreidimensionales Sieb ist.
  9. Baueinheit nach einem der Ansprüche 4 bis 8, bei der ein Abschnitt des unteren Siebs (103) unter dem oberen Sieb (101, 102) liegt.
  10. Baueinheit nach Anspruch 9, bei der wenigstens 10 % und nicht mehr als 60 % des unteren Siebs (103) unter dem oberen Sieb (101, 102) liegen.
  11. Baueinheit nach Anspruch 10, bei der ungefähr 50 % des unteren Siebs (103) unter dem oberen Sieb (101, 102) liegen.
  12. Baueinheit nach einem vorhergehenden Anspruch, ferner mit einem Rückflußkasten (42), der in der Nähe des unteren Siebträgers (30) angeordnet ist, um Material, das sich durch das untere Sieb (103) bewegt, in den unteren Sammelbehälter zu lenken.
  13. Baueinheit nach einem vorhergehenden Anspruch, bei der der obere Siebträger (20) so beschaffen ist, daß er wenigstens zwei Siebe (101, 102), die Ende an Ende angeordnet sind, trägt.
  14. Baueinheit nach Anspruch 13, bei der der obere Siebträger (20) so beschaffen ist, daß er die beiden Siebe (101, 102) unter zusammenlaufenden Winkeln trägt.
  15. Baueinheit nach einem vorhergehenden Anspruch, bei der der untere Siebträger (30) so beschaffen ist, daß er wenigstens zwei (nicht gezeigte) Siebe, die Ende an Ende angeordnet sind, trägt.
EP96915012A 1995-04-26 1996-04-26 Schieferschütler Expired - Lifetime EP0822853B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00204008A EP1088582B1 (de) 1995-04-26 1996-04-26 Siebverfahren mittels einer Schieferschüttelvorrichtung

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/430,933 US5641070A (en) 1995-04-26 1995-04-26 Shale shaker
US430933 1995-04-26
PCT/EP1996/001835 WO1996033792A1 (en) 1995-04-26 1996-04-26 Shale shaker

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP00204008A Division EP1088582B1 (de) 1995-04-26 1996-04-26 Siebverfahren mittels einer Schieferschüttelvorrichtung

Publications (2)

Publication Number Publication Date
EP0822853A1 EP0822853A1 (de) 1998-02-11
EP0822853B1 true EP0822853B1 (de) 2001-07-18

Family

ID=23709702

Family Applications (2)

Application Number Title Priority Date Filing Date
EP96915012A Expired - Lifetime EP0822853B1 (de) 1995-04-26 1996-04-26 Schieferschütler
EP00204008A Expired - Lifetime EP1088582B1 (de) 1995-04-26 1996-04-26 Siebverfahren mittels einer Schieferschüttelvorrichtung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP00204008A Expired - Lifetime EP1088582B1 (de) 1995-04-26 1996-04-26 Siebverfahren mittels einer Schieferschüttelvorrichtung

Country Status (6)

Country Link
US (1) US5641070A (de)
EP (2) EP0822853B1 (de)
AT (1) ATE203178T1 (de)
DE (2) DE69613973T2 (de)
NO (1) NO315311B1 (de)
WO (1) WO1996033792A1 (de)

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US6607080B2 (en) * 1993-04-30 2003-08-19 Varco I/P, Inc. Screen assembly for vibratory separators
US6186337B1 (en) 1998-10-30 2001-02-13 Tuboscope I/P, Inc. Dual screen element having upper scalping screen adhered to crests of corrugated lower screen
US6290068B1 (en) * 1993-04-30 2001-09-18 Tuboscope I/P, Inc. Shaker screens and methods of use
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US9199278B2 (en) 2002-04-26 2015-12-01 Globalfoundries Inc. Apparatus and method for separating solids from a solids laden drilling fluid
US20050242003A1 (en) 2004-04-29 2005-11-03 Eric Scott Automatic vibratory separator
GB2394196A (en) 2002-10-17 2004-04-21 Varco Int Screen assembly for a shale shaker
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US6868972B2 (en) * 2002-11-04 2005-03-22 Varco I/P, Inc. Fluid flow diffusers and vibratory separators
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US8622220B2 (en) 2007-08-31 2014-01-07 Varco I/P Vibratory separators and screens
US9079222B2 (en) 2008-10-10 2015-07-14 National Oilwell Varco, L.P. Shale shaker
US8556083B2 (en) 2008-10-10 2013-10-15 National Oilwell Varco L.P. Shale shakers with selective series/parallel flow path conversion
US9138668B2 (en) * 2010-02-19 2015-09-22 Daniel J. Simpson Dewatering of drilling mud using a filter press
GB2479919B (en) 2010-04-29 2012-10-03 Nat Oilwell Varco Lp Apparatus and method for separating solids from a solids laden drilling fluid
GB2490647B (en) 2011-01-27 2013-05-22 Nat Oilwell Varco Lp Screen assembly and a method for making same
US8857623B2 (en) 2011-04-29 2014-10-14 Michael D. Wiseman Screen retainer having adjustable tensioning
GB2523488B (en) 2011-07-15 2016-02-10 Nat Oilwell Varco Lp Apparatus and method for separating solids from a solids laden drilling mud
US9643111B2 (en) 2013-03-08 2017-05-09 National Oilwell Varco, L.P. Vector maximizing screen
GB2514589B (en) 2013-05-30 2020-01-29 Nat Oilwell Varco Lp Centrifuge for separating solids from solids laden drilling fluid
AU2015101267A4 (en) * 2014-12-05 2015-10-15 General Kinematics Corporation Vibratory apparatus with multiple screening decks
CN104612608A (zh) * 2015-01-30 2015-05-13 张劲南 一种新型泥浆固相控制系统及工艺
US10711545B2 (en) 2015-05-03 2020-07-14 Elgin Separation Solutions Industrials, Llc Shale shaker with stair-stepped arrangements of screens and methods of using same, and methods of retrofitting shale shakers
CA2959851A1 (en) * 2016-03-03 2017-09-03 Recover Energy Services Inc. Gas tight shale shaker for enhanced drilling fluid recovery and drilled solids washing
CN105971535B (zh) * 2016-06-15 2019-01-29 广州智创知识产权运营有限公司 油基钻井液的回收再利用设备
US11525239B2 (en) * 2018-04-30 2022-12-13 Vermeer Manufacturing Company Shaker assemblies having positioning devices
CN114042633A (zh) * 2021-11-24 2022-02-15 湖南百尼茶庵茶业有限公司 一种茶叶加工用智能翻炒筛分装置

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Also Published As

Publication number Publication date
ATE203178T1 (de) 2001-08-15
NO315311B1 (no) 2003-08-18
DE69628953T2 (de) 2003-12-24
EP1088582A2 (de) 2001-04-04
NO974081D0 (no) 1997-09-05
EP1088582B1 (de) 2003-07-02
DE69628953D1 (de) 2003-08-07
DE69613973T2 (de) 2001-11-08
EP0822853A1 (de) 1998-02-11
EP1088582A3 (de) 2001-10-24
NO974081L (no) 1997-10-10
US5641070A (en) 1997-06-24
DE69613973D1 (de) 2001-08-23
WO1996033792A1 (en) 1996-10-31

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